Mathdonic
Subtitle: cylchgrawn mathemateg ar gyfer cyfnodau allwedol 1,2 a 3.
Contributors: University of Wales, Bangor. School of Education.
Publisher: Ysgol Addysg, Safle'r Normal, Prifysgol Cymru Bangor a'r Ganolfan Astudiaethau Addysg
Published: 1997
Place of publication: Aberystwyth
Language: wel
Number of pages: 56